Alex uses genetic, proteomic and metabolomic approaches to study both infectious and chronic diseases.

She is currently funded by a Queensland Accelerate Fellowship to characterise the virulence mechanisms of the chytrid fungus Batrachochytrium dendrobatidis, a pathogen that has caused massive population declines in frog species worldwide. Alex is also funded by a JCU Rising Star Grant to study how oxidative stress can drive obesity-linked liver cancer.

Her previous research has focused on thiol-dependent antibiotic resistance and oxidative stress protection in Firmicutes, iron sequestration in marine actinomycetes, and the biosynthesis of cyanobacterial toxins.

  • BC2014: Principles of Biochemistry for Pharmacy Students (Level 2; TSV)
  • Enzymology
  • Virulence mechanisms
  • Amphibian chytrid fungus
  • Chytridiomycosis
  • Liver cancer
  • Metabolomics
  • Oxidative stress
  • 2018 to present - Lecturer - Molecular and Cell Biology, James Cook University (Townsville, Australia)
  • 2013 to present - Research Fellow, James Cook University (Townsville, Australia)
  • 2010 to 2012 - Senior Research Associate, University of East Anglia (Norwich, UK)
  • 2008 to 2010 - Postdoctoral Researcher, Scripps Institution of Oceanography at University of California San Diego (San Diego, USA)
  • 2004 to 2009 - PhD Microbiology and Immunology, University of New South Wales (Sydney, Australia)
Research Disciplines
  • 2015 to 2018 - Accelerate Fellowship - Department of Science, Information Technology, Innovation and the Arts
  • 2016 to 2017 - Rising Star Grant - James Cook University
  • 2004 to 2008 - Australian Postgraduate Award
  • 2004 to 2008 - CRC for Water Quality and Treatment Postgraduate Award
  • 2016 - Member of the Australian Society for Microbiology
  • 2016 - Member of the Australian Society for Biochemistry and Molecular Biology

These are the most recent publications associated with this author. To see a detailed profile of all publications stored at JCU, visit ResearchOnline@JCU. Hover over Altmetrics badges to see social impact.

Journal Articles

ResearchOnline@JCU stores 27+ research outputs authored by Dr Alexandra Roberts from 2007 onwards.

Current Funding

Current and recent Research Funding to JCU is shown by funding source and project.

Australasian Mycological Society - Research Awards

Glutathione biosynthesis in the amphibian fungus, Batrachochytrium dendrobatidis.

Indicative Funding
$3,000 over 1 year
What makes a successful fungal pathogen? In this project we aim to determine the role of glutathione in fungal pathogenesis. In doing so we will develop and optimise gene knockdown protocols, which can be used more broadly to assess other virulence factors. Specifically, we will: 1: Explore glutathione biosynthesis in virulent and less- virulent strains of Bd, both in vitro and in vivo. 2: Characterise the role of glutathione in pathogenesis using knockdown techniques.
Rebecca Webb, Catherine Rush and Alexandra Roberts in collaboration with Lee Berger and Lee Skerratt (College of Public Health and Medical & Vet Sciences)
Glutathione biosynthesis; Pathogensis; Chytrid Fungus

Ecological Society of Australia - Holsworth Wildlife Research Endowment

RNAi as a novel antifungal treatment for endangered frogs

Indicative Funding
$9,390 over 3 years
This project aims to develop a novel method to treat fungal diseases. RNA interference (RNAi) is a cutting edge technique in which small interfering RNA (siRNA) silences genes of interest. I aim to use siRNA to target virulence genes of the fungal disease `amphibian chytrid fungus? in the hope that this can be developed into therapeutic. This will be the first time RNAi has been manipulated in this fungi species, and also the first instance of using siRNA as an antifungal treatment for an animal.
Rebecca Webb, Alexandra Roberts, Lee Berger and Lee Skerratt (College of Public Health and Medical & Vet Sciences)
RNA interference; Health; Wildlife; Antifungal; Virulence; Biosecurity

Morris Animal Foundation - Pilot Studies

Saving endangered frogs: Using RNA Interference to reduce the virulence of the Frog-killing fungus

Indicative Funding
$13,800 over 2 years
This project aims to mitigate the effect of fungal diseases via small interfering RNA (siRNA) using Batrachochytrium dendrobatidis (Bd) infection in amphibians as a model system. Bd produces metabolites that suppress frog immunity, therefore, siRNAs will be developed to inhibit immunosuppressant production and improve host survival. First, siRNAs will be transfected into the pathogen, to confirm gene silencing and determine the effect on growth and virulence. Effective siRNAs will then be tested in vivo by spraying topically onto infected frogs, to improve disease resistance.
Alexandra Roberts in collaboration with Lee Berger, Rebecca Webb and Lee Skerratt (College of Public Health and Medical & Vet Sciences)
Amphibian Declines; Virulence; Antifungal treatment; Chytrid

Advisory Accreditation: I can be on your Advisory Panel as a Primary or Secondary Advisor.

These Higher Degree Research projects are either current or by students who have completed their studies within the past 5 years at JCU. Linked titles show theses available within ResearchOnline@JCU.

  • The Role of Fructose in Liver Cancer (PhD , Secondary Advisor)
  • Reducing Virulence of Fungal Pathogens using Genetics Tools (PhD , Primary Advisor)
  • The role of serotonin and glutathione in the pathogenesis of chytridiomycosis (PhD , Secondary Advisor)

The map shows research collaborations by institution from the past 7 years.
Note: Map points are indicative of the countries or states that institutions are associated with.

  • 5+ collaborations
  • 4 collaborations
  • 3 collaborations
  • 2 collaborations
  • 1 collaboration
  • Indicates the Tropics (Torrid Zone)

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  • 41.106, Public and Indigenous Health (Townsville campus)
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